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Abstract: A new analytical approach for detecting diaminopyridine derivatives has been constructed using a molecular imprinting-electrochemical sensor. Opposed to the conventional strategy of employing diaminopyridine as the functional monomer and uracil derivatives as the target analyte, in the current study, the 2,6-Diaminopyridine-imprinted core-shell nanoparticles were synthesized with 2,6-Diaminopyridine as the template molecule and 6-aminouracil as the functional monomer. Graphene and ionic liquid which can assist 2,6-Diaminopyridine-imprinted core-shell nanoparticles in electrochemical reaction kinetics by increasing conductivity have been introduced to form one of the electrode modified layers. The proposed analytical method has been applied in 2,6-Diaminopyridine detection in hair-dyes and demonstrated appropriate sensitivity and selectivity, with a linear range of 0.0500-35.0 mg kg-1 and a detection limit as low as 0.0275 mg kg-1
Template and target information: 2,6-Diaminopyridine
Author keywords: Molecular imprinting-electrochemical sensor, Graphene, Ionic liquid, Diaminopyridine derivatives detection, Multiple hydrogen bonding, Hair dyes